A. Input/output commands |
DECtape: |
dec | writes from a dec tape file to a disk file, |
iov | data transfer between a dec tape file and a graphic overlay, |
sample | sampled image values are stored in a dec tape file, |
store | save a function or pseudocolor table in a DEC tape file. |
Disk: |
did | prints or changes disk file’s identification record, |
dsk | data transfer between a disk file and a Comtal image or between a disk file and a magnetic tape file. |
Magnetic tape: |
file | position magnetic tape at a file, |
list | list identification records of a magnetic tape file, |
read | data transfer from a magnetic tape file to a Comtal image, |
rewind | rewind the magnetic tape, |
where | print the present position of the magnetic tape, |
write | data transfer from a Comtal image to a magnetic tape file. |
B. Display commands |
display | display image(s) on Comtal monitor in various modes, gray, function-processed, pseudocolor processed, etc., |
dso | same as display, but with graphic overlay superimposed, |
flicker | sequential display of images; the rate of display is controlled by the trackball, |
overlay | display a graphic overlay, |
scl | delete or insert scale wedge on Comtal image, |
table | display function or pseudocolor table, |
target | display, move, or print the position of the target. |
C. Function, pseudocolor table commands |
fun | ex, ln(x + 1), or tanh(x) function tables generated, |
linear | create a linear function or pseudocolor table by specifying end-point values of segments, |
print | print function or pseudocolor table values, |
shift | shift the function or pseudocolor table according to trackball position, |
slope | generate a linear function table by using the trackball to vary the slope and intercept in real time. |
D. Data manipulation commands |
add* | add two images, |
black | store a constant value in a rectangular area of an image, |
erase | erase an image or graphic overlay, |
flp | rotate an image 180°, |
replace | change a single value or a value within a rectangular area of an image, |
scale* | convert a sixteen-bit word array to an array of eight-bit bytes, |
subtract* | subtract two images, |
window* | smooth images using a window averaging method, |
xpd* | expand an array of eight-bit bytes to a 480 × 480-byte Comtal image array, |
zoom* | enlarge or reduce a Comtal image. |
E. Data analysis commands |
hic | compute and display a histogram of an area of an image specified by boundaries drawn in a graphic overlay, |
histogram | compute and display a histogram of an entire image, |
sts | compute mean, standard deviation of data array. |
F. Graphics commands |
etch | use trackball to draw line segments in a graphic overlay, |
gol | graphic overlay contents output to Gould plotter, |
graph | graph data values from a DECtape file in graphic overlay or on Gould plotter. |
G. Character generation commands |
label | write identification of an image in a graphic overlay, |
type | character lines entered via terminal are written in a graphic overlay. |
H. User assistance commands |
comment | comments may be entered at the terminal, |
end | terminate session, |
help | print all commands, |
status | print identification records of Comtal images. |